Mental Capacity Assessments for Lasting Power of Attorney Applications

Created: 23 April 2026

Planning for the future is something many of us prefer to put off, yet it is one of the most important steps we can take to protect our wishes, finances, and well-being. In England and Wales, a Lasting Power of Attorney (LPA) is a legal document that allows a person (the donor) to appoint one or more trusted individuals (the attorneys) to make decisions on their behalf if they lose the ability to do so themselves. Central to the validity of any LPA is the concept of mental capacity. Understanding mental capacity assessments, when they are needed, and how they work is crucial for anyone considering an LPA.

What Is a Lasting Power of Attorney?

There are two types of LPA:

1. Property and Financial Affairs LPA, which covers matters such as managing bank accounts, paying bills, or selling property.
2. Health and Welfare LPA, which covers decisions about medical treatment, care arrangements, and living situations.

An LPA can only be made by someone aged 18 or over who has the mental capacity to understand what they are doing at the time of making it. This is where mental capacity assessments become relevant.

Understanding Mental Capacity

Mental capacity refers to a person’s ability to make a specific decision at the time it needs to be made. Under the Mental Capacity Act 2005, a person is assumed to have capacity unless proven otherwise. Capacity is decision-specific and time-specific, meaning someone may have capacity for some decisions but not others, or they may lose and regain capacity over time.

To have capacity to make an LPA, the donor must be able to:

• Understand what an LPA is and why they are making one
• Understand the powers they are giving to their attorney(s)
• Understand that the LPA can be used (depending on the type) while they still have capacity, or once they lose it
• Understand that the LPA can be cancelled while they still have capacity

If these criteria are met, the person is generally considered to have the mental capacity required to create an LPA.

What Is a Mental Capacity Assessment?

A mental capacity assessment is a structured process used to determine whether someone has the capacity to make a particular decision at a particular time. For LPA applications, the assessment focuses specifically on whether the donor understands the nature and implications of the LPA.

The assessment usually follows a two-stage test:

1. Functional test – Does this impairment mean the person is unable to understand, retain, use or weigh the relevant information, or communicate their decision?
2. Diagnostic test – Is there an impairment or disturbance in the functioning of the person’s mind or brain (for example, dementia, brain injury, mental illness, or learning disability) which prevents the person making the decision?

Only if both stages are met can a person be said to lack capacity for that decision.

When Is a Mental Capacity Assessment Needed for an LPA?

Not every LPA application requires a formal mental capacity assessment. Many people complete LPAs without any additional assessment, particularly if there is no concern about their ability to understand the document.

However, a mental capacity assessment may be recommended or requested when:

• The donor has a diagnosis such as dementia or another cognitive impairment
• There are concerns from family members, professionals, or solicitors about the donor’s understanding
• The LPA is being made later in life or during a period of illness
• The LPA is likely to be challenged in the future and clear evidence of capacity is advisable

In such cases, a professional assessment can provide reassurance and legal protection.

Who Can Carry Out a Mental Capacity Assessment?

Capacity assessments for LPA purposes are typically carried out by qualified professionals with appropriate expertise. This may include:

• GPs or consultants
• Psychiatrists or psychologists
• Social workers
• Occupational therapists or specialist nurses

In many situations, particularly where there is a higher risk of future dispute, an independent professional with specific training in capacity assessments is preferred. The assessor must understand both the Mental Capacity Act and the legal requirements of an LPA.

The Role of the Certificate Provider

Every LPA must include a certificate provider, who confirms that the donor understands the LPA and is not under pressure or undue influence. The certificate provider can be:

• Someone who has known the donor well for at least two years, or
• A professional with relevant skills and expertise, such as a social worker, solicitor or doctor

While a certificate provider is not always carrying out a full mental capacity assessment, in practice there is often overlap. When there are doubts about capacity, the certificate provider may rely on, or recommend, a formal assessment to support their declaration.

What Happens During the Assessment?

A mental capacity assessment for an LPA is usually carried out in a calm, supportive environment, often in the person’s home or a clinical setting. The assessor will:

• Explain what an LPA is in clear, accessible language
• Ask the donor to describe, in their own words, what the LPA does
• Explore the donor’s understanding of the powers they are giving and the consequences
• Check that the decision is voluntary and free from pressure

Communication methods may be adapted to suit the individual, for example using simple language, visual aids, or extra time. The focus is always on enabling the person to make their own decision wherever possible.

Why Mental Capacity Assessments Matter

A well-documented mental capacity assessment provides significant benefits:

• Legal validity – It reduces the risk of the LPA being rejected by the Office of the Public Guardian or challenged later
• Protection for the donor – It ensures their wishes are genuinely understood and respected
• Reassurance for families and attorneys – It minimises conflict and uncertainty
• Clarity for professionals – It provides a clear record showing the decision was made properly

Without adequate evidence of capacity, families may face distressing legal disputes at a time when they are already under pressure.

Common Misunderstandings

One common myth is that a diagnosis of dementia automatically means a person cannot make an LPA. This is not true. Many people in the early stages of dementia still have the capacity to make informed decisions, including creating an LPA. Another misunderstanding is that capacity is “all or nothing”; in reality, it must be assessed specifically in relation to the LPA decision.

Conclusion

Mental capacity assessments play a vital role in Lasting Power of Attorney applications, particularly where capacity may later be questioned. They are not about taking control away from individuals, but about safeguarding their autonomy, wishes, and rights. By ensuring that an LPA is made with full understanding and proper documentation, donors can have confidence that their future affairs will be handled according to their wishes, and families can have peace of mind knowing that everything has been done correctly.

Planning ahead may feel uncomfortable, but taking the time to address mental capacity properly is one of the most empowering steps a person can take for their future.